JP7250552B2 - suction holding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction-holding device for easily holding containers such as lunch boxes, and more particularly to a suction-holding device capable of flexibly supporting many types of containers.

Containers such as boxed lunches that are successively conveyed by a belt conveyor or the like through processes such as filling with contents (such as the contents of boxed lunches) are finally housed in an aligned state in a container for transportation. Conventionally, this storage work was done manually by workers.

However, in recent years, due to a shortage of human resources, introduction of various robots to various production sites has been considered or practiced. In order to automatically accommodate containers such as lunch boxes in the transport container, a "general-purpose vacuum gripper" marketed by Schmalz Co., Ltd. is used as a suction holding device for sucking and holding containers such as lunch boxes. have been considered to do so.

Patent Documents 1 to 4 below are examples of conventional patent documents related to suction and holding devices.

JP-A-2000-296489 Japanese Patent Application Laid-Open No. 2010-030782 Japanese Patent Publication No. 2012-533491 Special Table 2014-509955

Steam holes are sometimes provided in the lid of boxed lunch containers for noodles and the like to be microwaved. In this case, simply using a "general-purpose vacuum gripper" sold by Schmalz Co., Ltd. may cause the container to be undesirably deformed by sucking the air inside the container through the steam hole in the lid. There is (As materials for containers such as lunch boxes, soft (easily deformable) materials, specifically OPS (biaxially oriented polystyrene), PP (polypropylene), PET, PS, paper, etc., are often adopted. .)

In addition, the container with the lid on may be further wound (wrapped) with a belt-shaped film. The strip-shaped film is called "strip shrink". In this case, by sucking and holding the "band shrink", even a heavy container can be held relatively easily. However, in this case, simply using a "general-purpose vacuum gripper" marketed by Schmalz Co., Ltd. sucks not only the "obi shrink" but also the surrounding container itself, so it is not suitable for heavy containers. Applying as high a suction force as possible can lead to undesired deformation of the container.

The present invention has been made in view of the above problems. SUMMARY OF THE INVENTION An object of the present invention is to realize a suction and hold operation for a container having a lid provided with a steam hole or a container provided with a belt shrink without fear of deformation of the container. to provide the equipment.

The present invention comprises a suction force transmission element in which a plurality of suction cylinders are arranged parallel to each other in a two-dimensional direction perpendicular to the axial direction of each suction cylinder; a suction force generating element connected to the inner space of the cylinder; and a suction force generating element arranged on the tip end side of a part of the plurality of suction cylinders to shield a part of the plurality of suction cylinders when viewed in the axial direction of the suction cylinders. and a shielding element having a shielding pattern.

According to the present invention, a portion of the plurality of suction cylinders is shielded by the shielding element when viewed in the axial direction of the suction cylinder, so that, for example, the shielding pattern of the shielding element corresponds to the region in which the steam holes are provided. By placing the cover, it is possible to prevent the container from being undesirably deformed due to suction of air inside the container through the steam holes of the lid, and/or, for example, the shielding pattern is provided with a shrink wrap. To achieve the object of the present invention, it is possible to prevent the container from being undesirably deformed due to suction of not only the band shrink but also the container itself around it, by corresponding to the region where the belt shrink is not formed. can be done.

The suction and hold device of the present invention further comprises a shielding element support mechanism for arranging the shielding element on the distal end side of a part of the plurality of suction cylinders, and the shielding element is positioned relative to the shielding element support mechanism. It is preferably removable.

In this case, for example, by exchanging a shielding element suitable for holding a container provided with a steam hole and a shielding element suitable for holding a container provided with a belt shrink, in both cases A suction force transmission device and a suction force generation device can be used in common. In other words, it is sufficient to change only the shielding element according to the characteristics of the container. Therefore, it is possible to change the specifications at a lower cost and in a shorter time than designing and manufacturing (the entirety of) the robot hand according to the characteristics of the container.

Further, it is preferable that the distal ends of the other portions of the plurality of suction cylinders protrude from the shielding element. In this case, regardless of the fact that a part of the plurality of suction cylinders is shielded by the shielding element when viewed in the axial direction of the suction cylinders, the other part of the plurality of suction cylinders effectively applies the suction force to the container. can act on

Here, it is preferable that each suction cylinder adopts a structure in which the distal end side expands and contracts with respect to the proximal end side. In this case, no matter what the shielding pattern of the shielding element is, when the shielding element is attached, the tip side of only the suction cylinder within the area corresponding to the shielding pattern is contracted, and the suction cylinder outside the area is shielded. It is possible to protrude from the element. In addition, in the suction cylinder, a structure in which the distal end side expands and contracts with respect to the proximal end side is conventionally known (typically, a bellows structure).

In the suction holding device of the present invention, when a specification for holding a container provided with steam holes is adopted, the shielding pattern may be provided corresponding to the area provided with the steam holes. preferable.

In the suction holding device of the present invention, when a specification for holding a container provided with a band shrink is adopted, the shielding pattern may be provided corresponding to an area where the band shrink is not provided. preferable.

As described above, by exchanging the shielding element, the suction and holding device of the present invention can be changed between the specification for holding a container provided with steam holes and the specification for holding a container provided with a belt shrink. Easy specification change is possible.

According to the present invention, a portion of the plurality of suction cylinders is shielded by the shielding element when viewed in the axial direction of the suction cylinder, so that, for example, the shielding pattern of the shielding element corresponds to the region in which the steam holes are provided. By placing the cover, it is possible to prevent the container from being undesirably deformed due to suction of air inside the container through the steam holes of the lid, and/or, for example, the shielding pattern is provided with a shrink wrap. By corresponding to the area where the belt is not stretched, it is possible to prevent not only the "band shrink" but also the surrounding container itself from being sucked and undesirably deforming the container, thereby achieving the object of the present invention. can do.

1 is a schematic diagram of a suction and hold device according to an embodiment of the present invention; FIG. FIG. 2 is an exploded view of the suction and hold device of FIG. 1; 2 is a bottom view of a suction force transmission element of the suction and hold device of FIG. 1; FIG. 2 is a bottom view of a suction force transmission element and a shielding plate (an example of a shielding element) of the suction and hold device of FIG. 1; FIG. FIG. 3 is a schematic plan view showing how the shielding pattern of the shielding plate (an example of the shielding element) of the suction and hold device of FIG. 1 corresponds to the steam holes of the lid; FIG. 2 is a schematic diagram showing a state in which the suction-holding device of FIG. 1 suction-holds three containers; FIG. 3 is a schematic plan view showing an arrangement example of nine containers aligned and housed in a container by the suction holding device of FIG. 1; 5 is a bottom view corresponding to FIG. 4 in a state where the shield plate is replaced with the shield plate of the second example; FIG. FIG. 11 is a schematic plan view showing how the shielding pattern of the shielding plate of the second example corresponds to the steam holes of the lid. FIG. 10 is a schematic diagram showing a state in which the suction holding device of the second example holds two or one container by suction; FIG. 11 is a schematic plan view showing an arrangement example of three containers aligned and housed in a container by the suction holding device of the second example; FIG. 9 is a bottom view corresponding to FIGS. 4 and 8 in a state where the shield plate is replaced with a third example; FIG. 11 is a schematic plan view showing how the shielding pattern of the shielding plate of the third example corresponds to the container around the belt shrink. FIG. 11 is a schematic diagram showing a state in which the suction-holding device of the third example suction-holds two or one container; FIG. 11 is a schematic plan view showing an arrangement example of five containers aligned and housed in a container by a suction holding device of a third example;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1A and 1B are schematic views of a suction holding device 1 according to an embodiment of the present invention (FIG. 1A is a schematic longitudinal sectional view showing a second row of suction cylinders 22, FIG. 1B is a side view). ), and FIG. 2 is an exploded view of the suction and hold device 1 of FIG. 3 is a bottom view of the suction force transmission element 20 of the suction and hold device 1 of FIG. 1, and FIG. 4 is a bottom view of the suction force transmission element 20 and the shielding plate 50 of the suction and hold device 1 of FIG. be.

As shown in FIGS. 1 to 4, in the suction-holding device 1 of the present embodiment, a plurality of suction cylinders 21 and 22 are arranged parallel to each other in a two-dimensional direction perpendicular to the axial direction of each of the suction cylinders 21 and 22. A suction force transmission element 20 is provided. As for the reference numerals of the plurality of suction cylinders, "21" is attached to those within the shielding pattern described later, and "22" is attached to those outside the shielding pattern.

A suction force generation element 10 connected to the inner space of each of the suction tubes 21 and 22 is provided on the base end side (upper side in FIG. 1) of the plurality of suction tubes 21 and 22 . More specifically, the suction force generating element 10 of this embodiment has a two-stage structure consisting of an upper stage portion 10a and a lower stage portion 10b. A suction space is provided, and the vacuum suction space is connected to the vacuum suction device and communicates with the internal spaces of the suction cylinders 21 and 22 .

Each of the suction cylinders 21 and 22 of this embodiment is a “multi-stage bellows type” “vacuum pad” marketed by “Myotoku” Co., Ltd., and cooperates with the suction force generating element 10 to provide a maximum of about 5 vacuum pads. Capable of providing ˜6N of suction force (eg, 72 lines totaling about 400N). However, as a combination of the suction force generating element 10 and the suction force transmitting element 20, the above-mentioned "General Purpose Vacuum Gripper" manufactured by Schmalz Co., Ltd. may be employed.

Each of the suction cylinders 21 and 22 of this embodiment has a substantially cylindrical shape with an inner diameter of 10 mm and a maximum outer diameter of 20 mm. 65 mm from the lower surface of the .

As shown in FIG. 3, the plurality of suction cylinders 21 and 22 in this embodiment are 72 in total, and are spaced equally (maximum The distance between the outer parts is 1 mm) are arranged in a zigzag pattern (first row 14, second row 15 (see FIGS. 1(a) and 2(a)), third row 14, fourth row 15 eyes, 14 eyes 5th row).

Further, as shown in FIGS. 2A and 2B, a mounting frame 40 (an example of a shielding element support mechanism) is provided on the lower surface of the lower portion 10b of the attraction force generating element 10. As shown in FIGS.

The mounting frame 40 of this embodiment includes four fixed portions 41 fixed to four corner portions of the lower surface of the lower portion 10b of the attraction force generating element 10, and four fixing portions 41 hanging vertically downward from the four corner portions. and a connecting portion 43 connecting the lower ends of the pair of legs 42 in the lateral direction.

In this embodiment, the bent edge piece 51 of the shielding plate 50 as the shielding element is detachably fixed to the outer surface of the connecting portion 43 using the fixing screw 44 .

As shown in FIG. 4, the shielding plate 50 of this embodiment has a shielding pattern that shields the 14 suction cylinders 21 in the third row when viewed in the axial direction of the suction cylinders 21 . The shielding plate 50 is arranged on the tip side of the suction tube 21 . The shielding plate 50 has a size of, for example, 35 cm×12 cm in plan view and a thickness of 2 mm, except for the bent edge piece 51 .

With the bent edge piece 51 of the shielding plate 50 attached to the outer surface of the connecting portion 43 by the fixing screw 44, the distance between the lower surface of the lower stage portion 10b of the attraction force generating element 10 and the upper surface of the shielding plate 50 is 55 mm. That is, with the shield plate 50 attached, the length of the 14 suction cylinders 21 in the third row is shortened so as to match this distance (multi-stage bellows structure functions). On the other hand, since the thickness of the shielding plate 50 is 2 mm, the remaining 58 suction cylinders 22 protrude from the lower surface of the shielding plate 50 by 8 mm.

The shielding pattern of the shielding plate 50 of this embodiment is effective when a small steam hole 81 is provided in the center of the lid of the three containers 80 aligned. FIG. 5 is a schematic plan view showing how the shielding pattern of the shielding plate 50 corresponds to the steam holes 81 of the lid.

In addition, a robot arm mounting portion 60 is provided on the upper surface of the lower portion 10b of the attraction force generating element 10. As shown in FIG. The robot arm attachment portion 60 of this embodiment is attached to a robot arm (specifically, VS068 manufactured by Denso Corporation).

Next, the operation of the suction-holding device 1 configured as described above will be described.

The suction-holding device 1 of the present embodiment is used by attaching the robot arm attachment portion 60 to a robot arm (not shown, but for example VS068 manufactured by Denso Corporation).

On the other hand, the containers 80 to be held by the suction-holding device 1 are sequentially conveyed in a state in which the lids (having steam holes 81) that cover the openings face upward, and are aligned in groups of three on a belt conveyor, for example. come. The container 80 has a weight of, for example, 250 g with the food enclosed, the lid is, for example, approximately circular with a diameter of about 10 cm, and the steam hole 81 fits in a circle with a diameter of 2 cm concentric with the center of the lid, while the lid It is formed by an incision that is too large to fit in a 2 cm diameter circle concentric with the center of the .

The robot arm grasps the transport state of each container 80 via, for example, a sensor or an image processing system (not shown), and executes a predetermined control program so as to synchronize with the movement timing or stop timing of each container 80. Then, the suction-holding device 1 is moved to three containers 80, and three containers 80 are transferred to the final transportation container.

Specifically, as shown in FIG. 6, the lid of the container 80 is sucked in the area where the steam holes 81 are not provided by using the suction action of the suction cylinder 22 that is not shielded by the shielding pattern of the shielding plate 50. Hold. As a result, undesired deformation of the container 80 caused by suction of air or the like inside the container 80 through the vapor hole 81 is reliably prevented.

As shown in FIG. 6, when the suction cylinder 22 holds the lid of the container 80 by suction, the lid is pulled toward the shielding plate 50 and contracted to a position where the lid abuts against the shielding plate 50 (the multi-stage bellows structure functions).

While the suction and hold device 1 sucks and holds the three containers 80 (see FIG. 6), by changing the position and attitude of the robot arm, the three containers 80 can be aligned in the container. can be accommodated. FIG. 7 is a schematic plan view showing an arrangement example of nine containers 80 arranged and stored in a container by the suction-holding device 1 of the present embodiment (containers containing nine containers are stacked). ).

As described above, according to the present embodiment, the shielding plate 50 shields the part 21 of the plurality of suction cylinders when viewed in the axial direction of the suction cylinder 21, and the shielding pattern of the shielding plate 50 is the steam hole. Since it corresponds to the area where 81 is provided, it is possible to reliably prevent the container 80 from being undesirably deformed due to suction of air or the like inside the container 80 through the steam hole 81 .

Further, in the suction-holding device 1 of the present embodiment, since the shielding plate 50 is removable from the mounting frame 40, for example, when the position of the steam hole 81 is changed, such a new container can be replaced. It is sufficient to change only the shielding plate 50 according to the characteristics. Therefore, it is possible to respond to specification changes at a lower cost and in a shorter period of time than redesigning or remanufacturing (the entire robot hand).

Further, since the distal ends of the other portions 22 of the plurality of suction cylinders of the suction and hold device 1 of the present embodiment protrude further downward from the lower surface of the shielding plate 50, the shielding plate 50 allows the plurality of suction cylinders to partially move. Regardless of the fact that 21 is shielded, the other portion 22 of the plurality of suction tubes can effectively apply suction force to container 80 .

(Replacement with the shielding plate 52 of the second example)
Next, FIG. 8 is a bottom view corresponding to FIG. 4 with the shielding plate 50 removed from the mounting frame 40 and replaced with the shielding plate 52 of the second example.

As shown in FIG. 8, the shield plate 52 of the second example completely shields the second and thirteenth suction cylinders 21 from one side for the first and fifth rows, and completely shields the seventh and eighth suction cylinders 21 from one side. Approximately half of the suction cylinders 21 are shielded, and for the second and fourth rows, the second to third and thirteenth to fourteenth suction cylinders 21 from one side are completely shielded, and the seventh and ninth suction cylinders. Approximately half of the cylinders 21 are shielded, and the third row has a shielding pattern that completely shields the 1st to 3rd, 7th to 8th, and 12th to 14th suction cylinders 21 from one side.

The shielding pattern of the shielding plate 52 of the second example is effective when a relatively large steam hole 86 is provided in the center of the lid of two containers 85 in alignment. FIG. 9(a) is a schematic plan view showing how the shielding pattern of the shielding plate 52 corresponds to the steam holes 86 of the two lids. The shielding pattern of the shielding plate 52 of the second example is also effective when a relatively large steam hole 86 is provided in the center of the lid of one container 85 . FIG. 9(b) is a schematic plan view showing how the shielding pattern of the shielding plate 52 corresponds to the steam holes 86 of one lid.

Even when the shielding plate 52 of the second example is used, as shown in FIGS. The lid of the container 85 is held by suction in the area where the steam holes 86 are not provided. As a result, undesired deformation of the container 85 due to suction of the air inside the container 85 through the vapor hole 86 is reliably prevented.

As shown in FIGS. 10A and 10B, the suction cylinder 22 sucking and holding the lid of the container 80 pulls the lid and contracts until the lid contacts the shielding plate 52 (multi-stage bellows structure works). The suction tube 22 that does not suction-hold the lid of the container 80 maintains its natural length.

The container 85 has a weight of, for example, 350 g with the food enclosed, the lid is, for example, approximately circular with a diameter of about 22 cm, and the steam hole 86 fits in a circle with a diameter of 5 cm concentric with the center of the lid, while the lid It is formed by an incision that is too large to fit in a 5 cm diameter circle concentric with the center of the .

Then, while the suction holding device 1′ holds two or one container 85 by suction (see FIGS. 10(a) and 10(b)), by changing the position, attitude, etc. of the robot arm, The two or one container 85 can be accommodated in an aligned state within the container. FIG. 11 is a schematic plan view showing an arrangement example of three containers 80 aligned and housed in a container by the suction-holding device 1' using the shield plate 52 of the second example (two containers 85 and one container 80). , and the container 85 are arranged in a staggered manner, and the containers in which these three containers are accommodated are stacked).

As described above, even when the shielding plate 52 of the second example is used, the part 21 of the plurality of suction cylinders is shielded by the shielding plate 52 when viewed in the axial direction of the suction cylinder 21, and the shielding plate 52 Since the shielding pattern corresponds to the area where the steam holes 86 are provided, the air inside the container 85 is sucked through the steam holes 86 and the container 85 is surely deformed undesirably. can be prevented.

In addition, in the suction-holding device 1' using the shielding plate 52 of the second example, since the shielding plate 52 is detachable from the mounting frame 40, for example, when the position of the steam hole 86 is changed, It is sufficient to change only the shield plate 52 to suit the characteristics of such a new container. Therefore, it is possible to respond to specification changes at a lower cost and in a shorter period of time than redesigning or remanufacturing (the entire robot hand).

In addition, since the distal end portions of the other portions 22 of the plurality of suction cylinders of the suction-holding device 1' using the shielding plate 52 of the second example also protrude further downward from the lower surface of the shielding plate 52, the shielding plate 52 allows the plurality of The suction force can be effectively exerted on the container 85 by the other portions 22 of the plurality of suction tubes regardless of the fact that the one portion 21 of the suction tubes is shielded.

(Replacement with the shielding plate 53 of the third example)
Next, FIG. 12 is a bottom view corresponding to FIGS. 4 and 8 in a state in which the shielding plate 50 is removed from the mounting frame 40 and the shielding plate 53 of the third example is attached (replaced) instead. .

As shown in FIG. 12, the shielding plate 53 of the third example exposes the 3rd to 4th, 7th to 9th and 12th to 13th suction cylinders 22 from one side in the second and fourth rows. It has a shielding pattern that exposes the 2nd to 3rd, 7th to 8th, and 12th to 13th suction cylinders 22 from one side in the row and completely shields the other suction cylinders 21 .

The shielding pattern of the shielding plate 53 of the third example is effective when the belt shrink 91 is provided for each of the two containers 90 aligned. FIGS. 13(a) to 13(c) are schematic plan views showing how the shielding pattern of the shielding plate 53 corresponds to the regions of the two lids where the belt shrink 91 is not provided. As shown in FIGS. 13(a) to 13(c), even if the position of the belt shrink 91 is rotated, the shielding pattern of the shielding plate 53 does not cover the area where the belt shrink 91 of the two lids is not provided. Always available.

Moreover, the shielding pattern of the shielding plate 53 of the third example is also effective when one container 90 is provided with the belt shrink 91 . FIGS. 13(d) to 13(f) are schematic plan views showing how the shielding pattern of the shielding plate 53 corresponds to the area of one lid where the band shrink 91 is not provided. As shown in FIGS. 13(d) to 13(f), even if the position of the belt shrink 91 is rotated, the shielding pattern of the shielding plate 53 always corresponds to the region of the lid where the belt shrink 91 is not provided. can do.

When the shielding plate 53 of the third example is used, as shown in FIGS. 14(a) and 14(b), the band is The container 90 can be held by suction in the area where the shrink 91 is provided. This reliably prevents the container 90 from being undesirably deformed due to suction of the lid around the belt shrink 91 .

14(a) and 14(b), the suction tube 22 sucking and holding the band shrink 91 of the lid of the container 90 draws the band shrink 91 of the lid, and the lid is pulled by the shield plate 53. (multi-stage bellows structure works). The suction tube 22 that does not suction-hold the band shrink 91 of the lid of the container 90 maintains its natural length.

The container 90 has a weight of, for example, 400 g in a state in which food is enclosed, the lid has a substantially circular shape with a diameter of, for example, about 18 cm, and the width of the belt shrink 91 is, for example, 7 cm.

By changing the position and attitude of the robot arm while the suction-holding device 1″ suction-holds two or one container 90 (see FIGS. 14(a) and 14(b)), These two or one container 90 can be accommodated in an aligned state in the container. FIG. 11 is a schematic plan view showing an arrangement example of five containers 90 (four containers 90 and one container 90 are arranged in a staggered manner, and containers containing these five containers are stacked). .

As described above, when the shielding plate 53 of the third example is used, the part 21 of the plurality of suction cylinders is shielded by the shielding plate 53 when viewed in the axial direction of the suction cylinder 21 . Since the shielding pattern corresponds to the region of the lid where the belt shrink 91 is not provided, it is possible to reliably prevent the container 90 from being undesirably deformed due to suction of the lid around the belt shrink 91. .

Also, in the suction-holding device 1″ using the shielding plate 53 of the third example, the shielding plate 53 is detachable from the mounting frame 40, so that when the size of the belt shrink 91 is changed, for example, , it is sufficient to change only the shield plate 53 according to the characteristics of such a new container, which is cheaper and takes less time than redesigning or remanufacturing (the entirety of) the robot hand. It is possible to respond to specification changes.

In addition, since the distal end portions of the other portions 22 of the plurality of suction cylinders of the suction-holding device 1″ using the shielding plate 53 of the third example also protrude further downward from the lower surface of the shielding plate 53, the shielding plate 53 allows the plurality of The suction force can be effectively applied to the container 90 by the other portion 22 of the plurality of suction tubes regardless of the fact that the portion 21 of the suction tubes is shielded.

(supplement)
As described above, the suction and hold device 1 is suitable for holding a container 80 having steam holes 81, and the suction and hold device 1' holds a container 85 having a relatively large steam hole 86. The suction and hold device 1 ″ is suitable for holding a container 90 provided with a belt shrink 91 . Containers without steam holes in the lid", "containers with a side shrink that shrinks the fitting part between the container body and the lid", and "full shrink that shrinks the fitting part between the container body and the lid and the entire surface of the lid". A "provided container" or the like can also be held.

1 Suction and Hold Device 1′ Suction and Hold Device 1″ Suction and Hold Device 10 Suction Force Generation Element 10a Upper Stage 10b Lower Stage 20 Suction Force Transmission Element 40 Mounting Frame 41 Fixing Part 42 Leg 43 Connecting Part 44 Fixing Screw 50 Shielding Plate 51 Bending Edge piece 52 Shielding plate (second example)
53 shield plate (third example)
60 robot arm mounting portion 80 container 81 steam hole (small)
85 container 86 steam hole (medium size)
90 container 91 belt shrink

Claims (3)

a suction force transmission element in which a plurality of suction cylinders are aligned parallel to each other in a two-dimensional direction perpendicular to the axial direction of each suction cylinder;
a suction force generating element disposed on the base end side of the plurality of suction cylinders and connected to the internal space of each suction cylinder;
a shielding element having a shielding pattern disposed on the distal end side of a part of the plurality of suction cylinders and shielding a part of the plurality of suction cylinders when viewed in the axial direction of the suction cylinders;
a shielding element support mechanism for arranging the shielding element on the distal end side of a portion of the plurality of suction cylinders;
with
The shielding element is removable with respect to the shielding element support mechanism,
The distal end sides of the other portions of the plurality of suction cylinders protrude from the shielding element.
A suction holding device characterized by: The suction holding device holds a container provided with steam holes,
2. The suction and hold device according to claim 1 , wherein the shielding pattern is provided corresponding to the region where the steam holes are provided. The suction holding device holds a container provided with a belt shrink,
2. The suction-holding device according to claim 1 , wherein said shielding pattern is provided corresponding to a region where band shrink is not provided.

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